Themes should be discussed, not words
OP,
I don't think there is one, and I think the world is too fractured for one to exist. Consider that the Internet and all globalist trends give every single person a nearly equal voice, save for corporations, although the voices of corporations are generally dismissed by people of intellectual or literary merit. I think this lets every single person surround themselves with a relatively homogenous community - each community has its own very unique form of customs and standards and values, each praises different things, and most aren't concerned at all with serious writng.
Take some example like the other user provided, like Dante, or even Hemingway for the "lost generation". Or mark twain. Or fuckin Einstein. These people became household names (to a certain extent), and you could discuss their ideas and style and merit with your neighbors or /real life friends/.
But at this point in time, at least in the developed West, those conversations aren't really possible anymore, at least from my experiences and perspective. Now, we congregate on places like Veeky Forums, and have our own very specific customs and values. These values vary even from board to board on Veeky Forums - they vary so much more when you consider all the forums and Facebook groups and whatever else is out there.
And since people are constantly reaffirming their views in these homogenous communities, they are violent towards the out groups! There's no real discussion on merit.
Because of this, how could there be a unifying work of literature, or one that accurately depicted or represented all those little worlds, that still took the form of a BOOK? The written word is too limited to capture what's going on right now, IMO.
Maybe you have a different view, or maybe I'm talking out my ass, let me know.